Homosexual Behavior Between Male Spider Monkeys (Ateles geoffroyi)

@article{Busia2018HomosexualBB,
  title={Homosexual Behavior Between Male Spider Monkeys (Ateles geoffroyi)},
  author={Laura Busia and Anthony Denice and Filippo Aureli and Colleen M. Schaffner},
  journal={Archives of Sexual Behavior},
  year={2018},
  volume={47},
  pages={857-861}
}
Homosexual behavior is defined as genital contact or genital manipulation between same-sex individuals. In nonhuman primates, it may regulate social relationships by serving as a means of reconciliation, tension alleviation, or alliance formation. Grappling is a rare and complex behavior, which most frequently occurs between same-sex individuals of the genus Ateles and can include mutual manipulation of the genitalia. Here we report three cases of penile–anal intromission during grappling… 

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